Can I help you , sir ?   I want to find a book called Gone with the Wind . But I can't find it .   Let me give you a hand . The author is ...   Margaret Mitchell .   Oh , yes . Here it is .   Thank you very much . I have been looking for it for a long time . Is this the latest edition ?   Yes , we have both the paperback and hardcover . which would you want to buy ?   How about the price of the hardcover ?   It's $ 25 .   A little bit expensive , but I will buy one . This is $ 25 , here you are . 